The United States is considering a targeted avian flu vaccination for turkeys in states with the highest concentration of turkey farms, as a way to potentially limit the economic impact of the disease. The vaccination strategy would be focused on specific turkey populations and would need to be geographically and species-specific, according to Rosemary Sifford, the chief veterinary officer of the US Department of Agriculture. The National Turkey Federation, which represents US farmers and processors, is in favor of developing a vaccine. However, the USDA continues to prioritize biosecurity measures over vaccination to control the spread of the virus.